Fabricating microgrooves with varied cross-sections by electrodischarge machining

Jiwang Yan, Takuya Kaneko, Kazunori Uchida, Nobuhito Yoshihara, Tsunemoto Kuriyagawa

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)


A two-step electrodischarge machining method was proposed for fabricating microgrooves with varied cross-sections on hard materials. Firstly, tungsten tool electrodes were shaped by wire electrodischarge grinding, and then the resulting tool electrodes were used to electrodischarge machine microgrooves on stainless steel. Preliminary experimental results showed that, in the first step, a sharp tool electrode with surface roughness of 0.3 μmRa could be achieved, and the surface roughness of the resulting groove was 0.16 μmRa in the second step. Voltage strongly affects the machining speed. A high voltage (>70 V) was preferable for improving the material removal rate. However, significant tool wear took place when using a high condenser capacitance at high voltages. To suppress tool wear, a high voltage and a small capacitance should be used. As test pieces, microgrooves having rectangular, triangular, circular and semi-closed cross-sections were fabricated.

Original languageEnglish
Pages (from-to)991-1002
Number of pages12
JournalInternational Journal of Advanced Manufacturing Technology
Issue number9-12
Publication statusPublished - 2010 Oct 1
Externally publishedYes


  • EDM
  • Electrodischarge machining
  • Microchannel
  • Microfabrication
  • Microgroove
  • Micromachining
  • Structured surface

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering


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